记述了采自内蒙古锡林浩特的中国跳小蜂科1新纪录种——蚤状杜丝跳小蜂Dusmetia pulex(Ruschka, 1923).提供了新纪录种成虫的形态特征图及该属中国已知种检索表.
A species of Encyrtidae, Dusmetia pulex(Ruschka, 1923), is firstly recorded from Xilinhaote City, Inner Mongolia, China. The photos of adult are provided, and a key to Chinese known species of Dusmetia is also given.
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